A Nebular Origin for Chondritic Fine-Grained Phyllosilicates

Details A Nebular Origin for Chondritic Fine-Grained Phyllosilicates A Nebular Origin for Chondritic Fine-Grained Phyllosilicates

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003sci...299..549c&link_type=abstract

Science, Volume 299, Issue 5606, pp. 549-552 (2003).

Physics

40

Scientific paper

Hydrated minerals occur in accretionary rims around chondrules in CM chondrites. Previous models suggested that these phyllosilicates did not form by gas-solid reactions in the canonical solar nebula. We propose that chondrule-forming shock waves in icy regions of the nebula produced conditions that allowed rapid mineral hydration. The time scales for phyllosilicate formation are similar to the time it takes for a shocked system to cool from the temperature of phyllosilicate stability to that of water ice condensation. This scenario allows for simultaneous formation of chondrules and their fine-grained accretionary rims.

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